Reflector and attachment therefor.



H. DOLIER, JR. REFLEGTOR AND ATTACHMENT THEREFOR.

APPLICATION FILED APR. 15, 1909.

' w mg Patented May a, 19m.

' procure on improved distribution oi'light' 31' KEY ITULZ'ER. 33%., OFRUT ERFORD, NEWJERSEY.

- nnrrncrcn Ann ATTACHMENT THEREFOR.

EST gilded.

Specification of Letters Yrs/cent.

Patented May S, 1911?.

Application filed April 15, 1909. Serial No. 490,007.

as to have considerable length or ente-nt as compared with the reflectordimensions.

My invention resides in a metallic shade or reflector for use in therelation above men tioned, and comprises :2 sheet motel shade orreflector having a hemispherical portion with an integral cylindricalextension,

which may he spun or pressed out of sheet metal by any well knownprocess. By a shade or reflector of such construction 1 from ordinaryincandescent lamp such as above described.

My invention resides in the features-hero inalter describes and claimed.

For an illustration of some oi? the forms my invent-ibis may take,reference is to be had to the accompanying drawing, in which:

Figure l is a. vericol elevational View of :in electric incandescentlamp and socket with the shade or reflector and attachlliient shown insection, the attachment being rel atively long with the resultantconccntration effect on the part of the reflector. Fig.

.2 is vertical. elcraliouel View of an electric incandescent lamp andits socket, the shade or reflector being attached with its at an anglewith the axis of the'lcmp and with a shorter shade or reflect orattachment whereby s diffusing and dispersing effect is obtained. Fig. 3is a side elevation VlUW of the split ring member. 1 p

The surface of the substantially hemispherical portion Z and the surfaceof the substantially cylindrical extension on are both reflectingsurfaces of substantially the some character.

In the drawing, to represents an incandescent lamp socket having a beadb. Withthe socket enga descent lamp L. A split resilient ring mem" her1", shown in side elevation in Fig. 3 ,with the gap has a bend a whichregisters with the socket head 6. The member r has cos the electricincan-' a reinforcing or stitlening head a. It also the bend shoulder (Zbetween which and has the flange 0 is adapted to engage the inturnedflange 7 of the extension member h. The ring member 9 beingsplit at g iscircumterentially resilient and ceube sprung into the opening in theupper end of the extension member 172,, that the flange f is engagedbetween the shoulders d and And likewise the ring member. is thuscapable of being sprung over the socket head 6. The extension member itcan turn or rotste relatively to the ring member r. v

At the mouth of the extension member it is, al shoulderbead j betweenwhich and the spun over flange or lip is engaged and held the sheetmetal or other. sultable shade or reflector member 1?. TlllS shade orreflector it has a substantially hemispherical p0rtion Z with osubstentially cylindrical extension on. The length oi the cylindricalportion m, represented by the distance n, is made substantially equal toone-half of the radius 0 of the hemisphere Z. While this relationbetween the cylindrical extension end the hemispherical portion may varyvwithin substantial limits, I have found that the relation stated makesan cilioient reflector, especially in the case of an lncandescentelectric lemp, such as L, whose filament or light giving source F hasconsiderable length or extent as compared with the length or diameter ofthe shade orreflector R formed as above stated. \Vhen such reflector isused with the extension 71 whereby the lamp is well up within thereflector, the reflected l ght is concentrated.

11110 1 have shown the extension h applied to the reflector B so thatthe lamp axis coincides with the reflector axis, it is to be understoodthat the extension it may be applied so that the lump axis shall be atan angle with the reflector axis as in the case of Fig. 2.

In Fig. 2, the lamp socket and lamp are the same as shown in Fig. 1 asis also thesplit ring member 9'. Here, however, it is sprung over thesocket bead Z) into the aperture in the shade or reflector R which is ofthe same type as shown in Fig. 1. The reflector B is rotatable-upon thesplit ring member .1. Here, however, the lamp axis is at, an angle withthe reflector axis, and

with the lamp relatively nearer the opening of the reflector the effectisai substantlal dispersion or diffusion of the reflected light.

It is to be understood also that the aperture in the reflectdf R whichreceives the ring member 2' in Fig. 2 may be placed at other,

angles than that shown and may be so placed that the lamp axis shallcoincide with the reflector axis. In such case, the action is one ofsubstantial concentration.

As above stated, the arrangement shown in Fig. 1 will give aconcentration of the reflected light, while that shown in Fig. 2 willgive a substantial dispersion or diffusion of the reflected light. AndWhether the reflector shown is used for concentration or aconsiderable-length or extent as comparedwith the reflector dimensions.

2. As an article of manufacture, a sheet metal reflector for electricincandescent lamps comprising a substantially hemispherical portion witha substantially cylindrical extension integral therewith, the interiorsurface of said substantiall hemispherical portion and the interiorsurface of said substantially leylindrical extension being reflectingsurfaces, said cylindrical extension having a length substantially equalto one- -half the radius of said hemispherical portion.

3. The combination with an electric i11- candescent lamp, of a sheetmetal reflector comprising a substantially hemispherical portion havinga substantially cylindrical ative relation with respect to said lamp,the I lamp filament having a considerable length or extent as comparedwith the reflector dimensions. 4

4. The combination with an electric incandescent lamp, ofa sheet metalreflector attached thereto, the lamp axis being at an angle with thereflector axis, said reflector comprising a substantially hemisphericalportion and a substantially cylindrical extension integral therewith,the interior surface of said substantially hemispherical portion and theinterior surface of said substantially cylindrical extension. beingreflecting surfaces, the lamp filament having a considerable length orextent as compared with the reflector dimensions.

5. The combination with a lamp socket, of

an electric incandescent lamp supportedthereby, a sheet metal reflectorhaving a substantially hemispherical portion and a substantiallycylindrical extension integral therewith; the surface of saidsubstantially hemispherical portion and the surface of saidsubstantially cylindrical extension being reflecting surfaces, the lampfilament having a considerable length or extent as compared with thereflectordimensions, and

means for rotatably supporting said reflector upon said socket with theaxis of said lamp at an angle with the axis of said reflector.

In testimonywhereof I have hereunto aflixed my signature in thepresenceof the two subscribing witnesses. 1

HENRY DOLIER, JR. Witnesses EDW. S. HOPKINS, S. L. SINCLAIR.

